I have a Rii and it's pretty nice, for what it is. The trackpad works well, and it seems well built. It's exactly the wrong size for efficient typing, though. It's too small to type normally (not to mention the fact that its keys are laid out in a grid instead of offset rows), and it's too big for thumb typing. But it's about the same size as an average remote control.

I bought mine from "Brando". They have a lot of keyboards.